<?php
$str = "wllx=1&title=6&pro_no=MAS1815106472291&title_name=%E6%B5%8B%E8%AF%95%E9%94%80%E5%94%AE%E7%89%A9%E6%96%99&gys=2&gys_name=%E4%B8%8A%E6%B5%B7%E8%88%AA%E8%BE%BE2222&unit=%E6%A0%B9&dj=12&num=3&zje=36&bz=3";
mb_parse_str($str,$aa);
print_r($aa);